222028907 has 2 divisors, whose sum is σ = 222028908. Its totient is φ = 222028906.

The previous prime is 222028879. The next prime is 222028931. The reversal of 222028907 is 709820222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222028907 - 2¹⁸ = 221766763 is a prime.

It is a super-2 number, since 2×222028907² = 98593671087229298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222028997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111014453 + 111014454.

It is an arithmetic number, because the mean of its divisors is an integer number (111014454).

Almost surely, 2^222028907 is an apocalyptic number.

222028907 is a deficient number, since it is larger than the sum of its proper divisors (1).

222028907 is an equidigital number, since it uses as much as digits as its factorization.

222028907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 222028907 is about 14900.6344495797. The cubic root of 222028907 is about 605.5311747867.

The spelling of 222028907 in words is "two hundred twenty-two million, twenty-eight thousand, nine hundred seven".